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Sodium Tripolyphosphate (STPP, Food Additive)
Chemical names: Pentasodium triphosphate, pentasodium tripolyphosphate.
Molecule Formula: Na5P3O10 Molecule Weight: 367.86
EEC NO.: E451. i INS NO.: 451(i)
Classification: Sequestrant, texturizer
CAS-NO.: 7758-29-4
Chinese Food Additive Number System (CNS):15.003
Standard: The product meets the requirement of GB25566-2010
Description: White Powder
Solubility: Soluble in water (the 5%solution is clear and colorless)
Specification:
Parameter | GB25566-2010 | Specification |
Description | White powder | White powder |
Na5P3O10 w/% ≥ | 85.0 | 95.0 |
P2O5 w/% ≥ | 56-58 | 57.0-58.0 |
Arsenic(As) / mg/kg ≤ | 3 | 1 |
Fluoride (F) / mg/kg ≤ | 50 | 5 |
Heavy Metals(as Pb) / mg/kg ≤ | 10 | 4 |
Lead (Pb) / mg/kg ≤ | 4 | 2 |
Insolubles w/% ≤ | 0.10 | 0.05 |
Ph vulue(10g/L solution) | - | 9.5~10.1 |
sodium tripolyphosphate STPP